Create Scrimp horn antenna
hornScrimp object creates a Scrimp horn antenna. Scrimp
(short circular ring loaded horn with minimized cross-polarization) horn antenna is a short,
axially corrugated horn antenna with a single slot. Using this antenna provides high aperture
efficiency, low cross-polarization, and low voltage standing wave ratio (VSWR) over a broad
frequency band. These antennas are used for navigation satellite feeder links in a medium
earth orbit (MEO).
creates Scrimp horn
antenna with dimensions for an operating frequency of 4 GHz.
ant = hornScrimp
sets Properties using one or more
name-value pairs. For example,
ant = hornScrimp(Name,Value)
Scrimp horn antenna with the cone height of 0.05 meters.
Radius — Radius of circular waveguide
0.02920 (default) | positive scalar
Radius of the circular waveguide, specified as a positive scalar in meters.
ant.Radius = 0.0760
WaveguideHeight — Height of circular waveguide
0.0250 (default) | positive scalar
Height of the circular waveguide, specified as a positive scalar in meters.
ant.WaveguideHeight = 0.0340
FeedHeight — Height of feed
0.0175 (default) | positive scalar
Height of the feed, specified as a positive scalar in meters.
ant.FeedHeight = 0.0085
FeedWidth — Width of feed
0.0003 (default) | positive scalar
Width of the feed, specified as a positive scalar in meters.
ant.FeedWidth = 0.0200
FeedOffset — Signed distance along waveguide height
0.0200 (default) | real-valued scalar
Signed distance along the waveguide height, specified as a real-valued scalar in meters.
ant.FeedOffset = 0.03627
ConeHeight — Height of cone
0.0362 (default) | positive scalar
Height of the cone, specified as a positive scalar in meters.
ant.ConeHeight = 0.0540
ConeRadius — Radius of cone
0.0408 (default) | positive scalar
Radius of the cone, specified as a positive scalar in meters.
ant.ConeRadius = 0.0540
ApertureRadius — Radius of cone aperture
0.0480 (default) | positive scalar
Radius of the cone aperture, specified as a positive scalar in meters.
ant.ApertureRadius = 0.0760
ApertureHeight — Height of cone aperture
0.0250 (default) | positive scalar
Height of the cone aperture, specified as a positive scalar in meters.
ant.ApertureHeight = 0.0760
StubHeight — Height of stub
0.0146 (default) | positive scalar
Height of the stub, specified as a positive scalar in meters.
ant.StubHeight = 0.0760
Conductor — Type of metal material
'PEC' (default) |
Type of the metal used as a conductor, specified as a metal material object. You can
choose any metal from the
MetalCatalog or specify a metal of your choice. For more information, see
more information on metal conductor meshing, see Meshing.
m = metal('Copper'); 'Conductor',m
m = metal('Copper'); ant.Conductor = m
TiltAxis — Tilt axis of antenna
[1 0 0] (default) | three-element vector of Cartesian coordinates | two three-element vectors of Cartesian coordinates |
Tilt axis of the antenna, specified as:
Three-element vector of Cartesian coordinates in meters. In this case, each coordinate in the vector starts at the origin and lies along the specified points on the X-, Y-, and Z-axes.
Two points in space, each specified as three-element vectors of Cartesian coordinates. In this case, the antenna rotates around the line joining the two points in space.
A string input describing simple rotations around one of the principal axes, 'X', 'Y', or 'Z'.
For more information, see Rotate Antennas and Arrays.
'TiltAxis',[0 1 0]
'TiltAxis',[0 0 0;0 1 0]
ant.TiltAxis = 'Z'
Tilt — Tilt angle of antenna
0 (default) | scalar | vector
Tilt angle of the antenna, specified as a scalar or vector with each element unit in degrees. For more information, see Rotate Antennas and Arrays.
ant.Tilt = 90
'TiltAxis',[0 1 0;0 1
1] tilts the antenna at 90 degrees about the two axes defined by the
Load — Lumped elements
lumpedElement] (default) |
Lumped elements added to the antenna feed, specified as a
lumpedElement object. You can add a load anywhere on the surface of
the antenna. By default, the load is at the feed. For more information, see
lumpedelement is the load added to the antenna feed.
ant.Load = lumpedElement('Impedance',75)
|Display antenna, array structures or shapes|
|Axial ratio of antenna|
|Beamwidth of antenna|
|Charge distribution on antenna or array surface|
|Current distribution on antenna or array surface|
|Design prototype antenna or arrays for resonance around specified frequency|
|Radiation efficiency of antenna|
|Electric and magnetic fields of antennas; Embedded electric and magnetic fields of antenna element in arrays|
|Input impedance of antenna; scan impedance of array|
|Mesh properties of metal, dielectric antenna, or array structure|
|Change mesh mode of antenna structure|
|Optimize antenna or array using SADEA optimizer|
|Radiation pattern and phase of antenna or array; Embedded pattern of antenna element in array|
|Azimuth pattern of antenna or array|
|Elevation pattern of antenna or array|
|Calculate and plot radar cross section (RCS) of platform, antenna, or array|
|Return loss of antenna; scan return loss of array|
|Calculate S-parameter for antenna and antenna array objects|
|Voltage standing wave ratio of antenna|
Create Default Scrimp Horn Antenna and Plot Radiation Pattern
Create Scrimp horn antenna with default properties.
ant = hornScrimp
ant = hornScrimp with properties: Radius: 0.0292 WaveguideHeight: 0.0250 FeedHeight: 0.0175 FeedWidth: 3.0000e-04 FeedOffset: 0.0200 ConeHeight: 0.0362 ConeRadius: 0.0408 ApertureRadius: 0.0480 ApertureHeight: 0.0250 StubHeight: 0.0146 Conductor: [1x1 metal] Tilt: 0 TiltAxis: [1 0 0] Load: [1x1 lumpedElement]
View the antenna using the
Plot the radiation pattern of the Scrimp horn antenna at a frequency of 4 GHz.
Plot S-Parameter of Scrimp Horn Antenna
Create Scrimp horn antenna with the aperture radius of 0.06 meters.
ant = hornScrimp; ant.ApertureRadius = 0.06;
Visualize the antenna using the
Plot the S-parameters over a frequency range of 3.6 GHz to 4.5 GHz.
s = sparameters(ant,linspace(3.6e9,4.5e9,51)); rfplot(s)
Parametric Analysis Guidelines
To understand how the properties of the
hornScrimp antenna object
influence the antenna design, use these parametric analysis guidelines.
To increase the operating frequency, decrease the FeedHeight of the
To increase the gain, increase the ApertureRadius, ApertureHeight, and StubHeight of the
 Muhammad, S. A., A. Rolland, S. H. Dahlan, R. Sauleau, and H. Legay. “Hexagonal-Shaped Broadband Compact Scrimp Horn Antenna for Operation in C-Band.” IEEE Antennas and Wireless Propagation Letters 11 (2012): 842–45.
 Muhammad, S., A. Rolland, S. H. Dahlan, R. Sauleau and H. Legay. “Comparison Between Scrimp Horns and Stacked Fabry-Perot Cavity Antennas with Small Apertures.” 2012 6th European Conference on Antennas and Propagation (EUCAP) (2012): 817–820.
Introduced in R2021a